User Manual

DS773DB1 3
CDB42L55
LIST OF FIGURES
Figure 1.Quick Start Board Layout .............................................................................................................. 4
Figure 2.S/PDIF or PSIA In to Analog Out .................................................................................................. 8
Figure 3.Analog In to S/PDIF or PSIA Out .................................................................................................. 9
Figure 4.Board Configuration Tab ...................... .... ... ... ... .... ... ... ... .... ... ... ... ................ .... ... ... ... ... ................ 11
Figure 5.CODEC Configuration Tab ......................................................................................................... 12
Figure 6.ADC Input Channel Volume Tab ................................................................................................. 13
Figure 7.DSP Engine Tab ......................................................................................................................... 14
Figure 8.Analog Output Volume Tab ......................................................................................................... 15
Figure 9.Register Maps Tab - CS42L55 ................................................................................................... 16
Figure 10.THD+N vs Freq. - Analog In to Digital Out ................................................................................ 19
Figure 11.THD+N vs Amplitude - Analog In to Digital Out ........................................................................19
Figure 12.FFT - Analog In to Digital Out @ -1 dBFS ................................................................................ 19
Figure 13.FFT - Analog In to Digital Out @ -60 dBFS .............................................................................. 19
Figure 14.FFT - Analog In to Digital Out - no input ................................................................................... 20
Figure 15.FFT Crosstalk - Analog In to Digital Out @ -1 dBFS ................................................................ 20
Figure 16.Freq. Response - Analog In to Digital Out ................................................................................ 20
Figure 17.Fade-to-Noise Linearity - Analog In to Digital Out .................................................................... 20
Figure 18.THD+N vs Freq. - Digital In to HP Out ...................................................................................... 20
Figure 19.THD+N vs Amplitude - Digital In to HP Out .............................................................................. 20
Figure 20.THD+N vs Volume - Digital In to HP Out .................. ... .... ... ... ... ... .... ... ... ... .... ... ... ... ................... 21
Figure 21.FFT - Digital In to HP Out @ 0 dBFS ........................................................................................ 21
Figure 22.FFT - Digital In to HP Out @ -60 dBFS ..................................................................................... 21
Figure 23.FFT - Digital In to HP Out - no input ......................................................................................... 21
Figure 24.Freq. Response - Digital In to HP Out ...................................................................................... 21
Figure 25.Fade-to-Noise Linearity- Digital In to HP Out ............................................................................ 21
Figure 26.FFT Crosstalk - Digital In to HP Out @ 0 dBFS ........................................................................22
Figure 27.THD+N vs Freq. - Digital In to Line Out .................................................................................... 22
Figure 28.THD+N vs Amplitude - Digital In to Line Out ............................................................................ 22
Figure 29.THD+N vs Volume - Digital In to Line Out ................................................................................ 22
Figure 30.FFT - Digital In to Line Out @ 0 dBFS ...................................................................................... 22
Figure 31.FFT - Digital In to Line Out @ -60 dBFS ................................................................................... 22
Figure 32.FFT - Digital In to Line Out - no input ........................................................................................ 23
Figure 33.FFT Crosstalk - Digital In to Line Out @ 0 dBFS ......................................................................23
Figure 34.Freq. Response - Digital In to Line Out ..................................................................................... 23
Figure 35.Fade-to-Noise Linearity- Digital In to Line Out .......................................................................... 23
Figure 36.Block Diagram ........................................................................................................................... 24
Figure 37.CS42L55 & Analog I/O (Schematic Sheet 1) ............................................................................ 25
Figure 38.S/PDIF & Digital Interface (Schematic Sheet 2) .......................................................................26
Figure 39.PLL, oscillator and external I/O connections (Schematic Sheet 3) ........................................... 27
Figure 40.Microcontroller and FPGA (Schematic Sheet 4) ....................................................................... 28
Figure 41.Power (Schematic Sheet 5) ...................................................................................................... 29
Figure 42.Silk Screen ................................................................................................................................ 30
Figure 43.Top-Side Layer ......................................................................................................................... 31
Figure 44.GND (Layer 2) ........................................................................................................................... 32
Figure 45.Power (Layer 3) .....................................................................................................
................... 33
Figure 46.Bottom Side Layer .................................................................................................................... 34
LIST OF TABLES
Table 1. System Connections ................ ... ... ... ... .... ... ... ... ................. ... ... ... ... .... ... ... ................ ................... 17
Table 2. Jumper Settings ... ................ .... ... ... ... ... .... ... ................ ... .... ... ... ... ... .... ................ ... ...................... 18